diff --git a/include/functions.h b/include/functions.h
index 52559cda58..c86b2b444e 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -2262,7 +2262,7 @@ void func_800F4C58(Vec3f*, u16, u8);
 void func_800F574C(f32 arg0, UNK_TYPE arg2);
 void func_800F595C(u16);
 void func_800F59E8(u16);
-// ? func_800F5ACC(?);
+void func_800F5ACC(u32 bgmID);
 void func_800F5B58();
 void func_800F5C64(u16);
 // ? func_800F5CF8(?);
diff --git a/src/overlays/actors/ovl_En_Ik/z_en_ik.c b/src/overlays/actors/ovl_En_Ik/z_en_ik.c
index 7444e655a2..e3f5ab534d 100644
--- a/src/overlays/actors/ovl_En_Ik/z_en_ik.c
+++ b/src/overlays/actors/ovl_En_Ik/z_en_ik.c
@@ -12,7 +12,6 @@
 
 #define THIS ((EnIk*)thisx)
 
-typedef void (*EnIkActionFunc)(struct EnIk*, GlobalContext*);
 typedef void (*EnIkDrawFunc)(struct EnIk*, GlobalContext*);
 
 void EnIk_Init(Actor* thisx, GlobalContext* globalCtx);
@@ -22,11 +21,16 @@ void EnIk_Draw(Actor* thisx, GlobalContext* globalCtx);
 
 void func_80A74398(EnIk* this, GlobalContext* globalCtx);
 void func_80A74714(EnIk* this);
+void func_80A7489C(EnIk* this);
+void func_80A7492C(EnIk* this, GlobalContext* globalCtx);
 void func_80A75FA0(Actor* thisx, GlobalContext* globalCtx);
 void func_80A76798(Actor* thisx, GlobalContext* globalCtx);
+void func_80A76BF4();
 void func_80A780D0(EnIk* this, GlobalContext* globalCtx);
+void func_80A78160(EnIk* this, GlobalContext* globalCtx);
 
 extern AnimationHeader D_0600C114;
+extern AnimationHeader D_0600DD50;
 extern SkeletonHeader D_0601E178;
 
 extern ColliderCylinderInit D_80A78340;
@@ -62,7 +66,10 @@ void EnIk_Destroy(Actor* thisx, GlobalContext* globalCtx) {
     Collider_DestroyQuad(globalCtx, &this->unk_36C);
 }
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A74390.s")
+// EnIk_SetupAction
+void func_80A74390(EnIk* this, EnIkActionFunc actionFunc) {
+    this->actionFunc = actionFunc;
+}
 
 #ifdef NON_MATCHING
 void func_80A74398(EnIk* this, GlobalContext* globalCtx) {
@@ -130,7 +137,15 @@ void func_80A74398(EnIk* this, GlobalContext* globalCtx) {
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A747C0.s")
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A7489C.s")
+void func_80A7489C(EnIk* this) {
+    f32 frames = SkelAnime_GetFrameCount(&D_0600DD50.genericHeader);
+
+    this->actor.flags |= 5;
+    this->unk_2F8 = 4;
+    this->actor.speedXZ = 0.0f;
+    SkelAnime_ChangeAnim(&this->skelAnime, &D_0600DD50, 0.0f, 0.0f, frames, 0, 4.0f);
+    func_80A74390(this, func_80A7492C);
+}
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A7492C.s")
 
@@ -182,7 +197,11 @@ void func_80A74398(EnIk* this, GlobalContext* globalCtx) {
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A76798.s")
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A76BF4.s")
+// starts middle boss bgm
+void func_80A76BF4() {
+    // NA_BGM_MIDDLE_BOSS
+    func_800F5ACC(0x38);
+}
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A76C14.s")
 
@@ -266,9 +285,28 @@ void EnIk_Draw(Actor* thisx, GlobalContext* globalCtx) {
     }
 }
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A780D0.s")
+void func_80A780D0(EnIk* this, GlobalContext* globalCtx) {
+    if (this->actor.params == 0) {
+        if (!(gSaveContext.eventChkInf[3] & 0x800)) {
+            this->actor.update = EnIk_Update;
+            this->actor.draw = EnIk_Draw;
+            Actor_SetScale(&this->actor, 0.01f);
+        } else {
+            func_80A78160(this, globalCtx);
+            func_80A76BF4();
+        }
+    }
+    osSyncPrintf("En_Ik_inConfrontion_Init : %d !!!!!!!!!!!!!!!!\n", this->actor.params);
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A78160.s")
+void func_80A78160(EnIk* this, GlobalContext* globalCtx) {
+    this->actor.update = func_80A75FA0;
+    this->actor.draw = func_80A76798;
+    this->actor.flags |= 5;
+    gSaveContext.eventChkInf[3] |= 0x800;
+    Actor_SetScale(this, 0.012f);
+    func_80A7489C(this);
+}
 
 #pragma GLOBAL_ASM("asm/non_matchings/overlays/actors/ovl_En_Ik/func_80A781CC.s")
 
diff --git a/src/overlays/actors/ovl_En_Ik/z_en_ik.h b/src/overlays/actors/ovl_En_Ik/z_en_ik.h
index b9c29fee4e..4da5d282b4 100644
--- a/src/overlays/actors/ovl_En_Ik/z_en_ik.h
+++ b/src/overlays/actors/ovl_En_Ik/z_en_ik.h
@@ -6,16 +6,20 @@
 
 struct EnIk;
 
+typedef void (*EnIkActionFunc)(struct EnIk*, GlobalContext*);
+
 typedef struct EnIk {
     /* 0x0000 */ Actor actor;
     /* 0x014C */ SkelAnime skelAnime;
     /* 0x0190 */ Vec3s limbDrawTable[30];
     /* 0x0244 */ Vec3s transitionDrawTable[30];
-    /* 0x02F8 */ char unk_2F8[0x04];
+    /* 0x02F8 */ s8 unk_2F8;
+    /* 0x02F9 */ char unk_2F9[0x03];
     /* 0x02FC */ s8 unk_2FC;
     /* 0x02FD */ char unk_2FD[0x05];
     /* 0x0302 */ s16 switchFlags;
-    /* 0x0304 */ char unk_304[0x1C];
+    /* 0x0304 */ EnIkActionFunc actionFunc;
+    /* 0x0308 */ char unk_308[0x18];
     /* 0x0320 */ ColliderCylinder unk_320;
     /* 0x036C */ ColliderQuad unk_36C;
     /* 0x03EC */ ColliderTris unk_3EC;
diff --git a/undefined_syms.txt b/undefined_syms.txt
index 5d29e5446d..8d4cfbdc8c 100644
--- a/undefined_syms.txt
+++ b/undefined_syms.txt
@@ -1109,8 +1109,9 @@ D_060009D0 = 0x060009D0;
 D_06000A60 = 0x06000A60;
 
 // z_en_ik
-D_0601E178 = 0x0601E178;
 D_0600C114 = 0x0600C114;
+D_0600DD50 = 0x0600DD50;
+D_0601E178 = 0x0601E178;
 
 // z_en_insect
 D_04035590 = 0x04035590;